diff --git a/src/lagrangian/intermediate/parcels/Templates/ReactingParcel/ReactingParcel.C b/src/lagrangian/intermediate/parcels/Templates/ReactingParcel/ReactingParcel.C
index 91f07d24db..968b1cedf6 100644
--- a/src/lagrangian/intermediate/parcels/Templates/ReactingParcel/ReactingParcel.C
+++ b/src/lagrangian/intermediate/parcels/Templates/ReactingParcel/ReactingParcel.C
@@ -50,16 +50,19 @@ void Foam::ReactingParcel<ParcelType>::setCellValues
 
     if (pc_ < td.cloud().constProps().pMin())
     {
-        WarningIn
-        (
-            "void Foam::ReactingParcel<ParcelType>::setCellValues"
-            "("
-                "TrackData&, "
-                "const scalar, "
-                "const label"
-            ")"
-        )   << "Limiting observed pressure in cell " << cellI << " to "
-            << td.cloud().constProps().pMin() <<  nl << endl;
+        if (debug)
+        {
+            WarningIn
+            (
+                "void Foam::ReactingParcel<ParcelType>::setCellValues"
+                "("
+                    "TrackData&, "
+                    "const scalar, "
+                    "const label"
+                ")"
+            )   << "Limiting observed pressure in cell " << cellI << " to "
+                << td.cloud().constProps().pMin() <<  nl << endl;
+        }
 
         pc_ = td.cloud().constProps().pMin();
     }
@@ -86,54 +89,50 @@ void Foam::ReactingParcel<ParcelType>::cellValueSourceCorrection
         return;
     }
 
-    scalar massCell = this->massCell(cellI);
+    const scalar massCell = this->massCell(cellI);
 
-    const scalar V = td.cloud().pMesh().cellVolumes()[cellI];
-    this->rhoc_ += addedMass/V;
+    this->rhoc_ += addedMass/td.cloud().pMesh().cellVolumes()[cellI];
 
-    scalar massCellNew = massCell + addedMass;
+    const scalar massCellNew = massCell + addedMass;
     this->Uc_ += td.cloud().UTrans()[cellI]/massCellNew;
 
     scalar CpEff = 0.0;
-    scalar CsEff = 0.0;
-    scalar Csc = 0.0;
     if (addedMass > ROOTVSMALL)
     {
         forAll(td.cloud().rhoTrans(), i)
         {
             scalar Y = td.cloud().rhoTrans(i)[cellI]/addedMass;
             CpEff += Y*td.cloud().composition().carrier().Cp(i, this->Tc_);
-
-            scalar W = td.cloud().composition().carrier().W(i);
-            CsEff += td.cloud().rhoTrans(i)[cellI]/V*Y/W;
-            scalar Yc = td.cloud().composition().carrier().Y(i)[cellI];
-            Csc += massCell/V*Yc/W;
         }
     }
-    CsEff = (massCell*Csc + addedMass*CsEff)/massCellNew;
 
     const scalar Cpc = td.CpInterp().psi()[cellI];
     this->Cpc_ = (massCell*Cpc + addedMass*CpEff)/massCellNew;
 
     this->Tc_ += td.cloud().hsTrans()[cellI]/(this->Cpc_*massCellNew);
 
-    if (this->Tc_ < td.cloud().constProps().TMin())
+    if (debug && (this->Tc_ < td.cloud().constProps().TMin()))
     {
-        WarningIn
-        (
-            "void Foam::ReactingParcel<ParcelType>::cellValueSourceCorrection"
-            "("
-                "TrackData&, "
-                "const scalar, "
-                "const label"
-            ")"
-        )   << "Limiting observed temperature in cell " << cellI << " to "
-            << td.cloud().constProps().TMin() <<  nl << endl;
+        if (debug)
+        {
+            WarningIn
+            (
+                "void Foam::ReactingParcel<ParcelType>::"
+                "cellValueSourceCorrection"
+                "("
+                    "TrackData&, "
+                    "const scalar, "
+                    "const label"
+                ")"
+            )   << "Limiting observed temperature in cell " << cellI << " to "
+                << td.cloud().constProps().TMin() <<  nl << endl;
+        }
 
         this->Tc_ = td.cloud().constProps().TMin();
     }
 
-    this->pc_ = CsEff*specie::RR*this->Tc_;
+//  constant pressure
+//  this->pc_ = this->pc_;
 }
 
 
diff --git a/src/lagrangian/intermediate/parcels/Templates/ThermoParcel/ThermoParcel.C b/src/lagrangian/intermediate/parcels/Templates/ThermoParcel/ThermoParcel.C
index b95ba03f8c..153ac45fa6 100644
--- a/src/lagrangian/intermediate/parcels/Templates/ThermoParcel/ThermoParcel.C
+++ b/src/lagrangian/intermediate/parcels/Templates/ThermoParcel/ThermoParcel.C
@@ -49,16 +49,19 @@ void Foam::ThermoParcel<ParcelType>::setCellValues
 
     if (Tc_ < td.cloud().constProps().TMin())
     {
-        WarningIn
-        (
-            "void Foam::ThermoParcel<ParcelType>::setCellValues"
-            "("
-                "TrackData&, "
-                "const scalar, "
-                "const label"
-            ")"
-        )   << "Limiting observed temperature in cell " << cellI << " to "
-            << td.cloud().constProps().TMin() <<  nl << endl;
+        if (debug)
+        {
+            WarningIn
+            (
+                "void Foam::ThermoParcel<ParcelType>::setCellValues"
+                "("
+                    "TrackData&, "
+                    "const scalar, "
+                    "const label"
+                ")"
+            )   << "Limiting observed temperature in cell " << cellI << " to "
+                << td.cloud().constProps().TMin() <<  nl << endl;
+        }
 
         Tc_ = td.cloud().constProps().TMin();
     }
@@ -81,16 +84,19 @@ void Foam::ThermoParcel<ParcelType>::cellValueSourceCorrection
 
     if (Tc_ < td.cloud().constProps().TMin())
     {
-        WarningIn
-        (
-            "void Foam::ThermoParcel<ParcelType>::cellValueSourceCorrection"
-            "("
-                "TrackData&, "
-                "const scalar, "
-                "const label"
-            ")"
-        )   << "Limiting observed temperature in cell " << cellI << " to "
-            << td.cloud().constProps().TMin() <<  nl << endl;
+        if (debug)
+        {
+            WarningIn
+            (
+                "void Foam::ThermoParcel<ParcelType>::cellValueSourceCorrection"
+                "("
+                    "TrackData&, "
+                    "const scalar, "
+                    "const label"
+                ")"
+            )   << "Limiting observed temperature in cell " << cellI << " to "
+                << td.cloud().constProps().TMin() <<  nl << endl;
+        }
 
         Tc_ = td.cloud().constProps().TMin();
     }
@@ -116,21 +122,24 @@ void Foam::ThermoParcel<ParcelType>::calcSurfaceValues
 
     if (Ts < td.cloud().constProps().TMin())
     {
-        WarningIn
-        (
-            "void Foam::ThermoParcel<ParcelType>::calcSurfaceValues"
-            "("
-                "TrackData&, "
-                "const label, "
-                "const scalar, "
-                "scalar&, "
-                "scalar&, "
-                "scalar&, "
-                "scalar&, "
-                "scalar&"
-            ") const"
-        )   << "Limiting parcel surface temperature to "
-            << td.cloud().constProps().TMin() <<  nl << endl;
+        if (debug)
+        {
+            WarningIn
+            (
+                "void Foam::ThermoParcel<ParcelType>::calcSurfaceValues"
+                "("
+                    "TrackData&, "
+                    "const label, "
+                    "const scalar, "
+                    "scalar&, "
+                    "scalar&, "
+                    "scalar&, "
+                    "scalar&, "
+                    "scalar&"
+                ") const"
+            )   << "Limiting parcel surface temperature to "
+                << td.cloud().constProps().TMin() <<  nl << endl;
+        }
 
         Ts = td.cloud().constProps().TMin();
     }